▶ 구구단 > SCRIPT

• 목록

<script type="text/javascript">

function gugudan(a){

var num1=a;

num1 = parseInt(num1);

if(isNaN(num1)){

alert("숫자만입력해~");

}else{

var pkt="";

for(i=1; i<10; i++){

pkt += num1 + " x " + i + " = " + num1*i + "<br>";

}

document.getElementById("dan").innerHTML = pkt;

}

}

</script>

<h2>구구단</h2>

몇단: 

<input type="text" id="gugu" size="3" value="2"> 

<input type="button" value="출력" onclick="gugudan(document.getElementById('gugu').value)">

<br><br>

<span id="dan">출력구간</span>